Gettysburg is a brilliant game! It's one of the VERY few RTS that makes simply massing a bunch of troops in a cluster attack a non-viable tactic. With the addition of terrain defense factors and well-implemented morale and flanking rules, it's truly a thinking man's RTS. Of course, the subject matter and relatively bare-bones approach might not appeal to many people, but the mechanics are stellar.
The only game from Sid that even remotely failed to impress was Covert Action. In fact, based on that experience, Sid coined his "Covert Action Rule": It's better to have one good game than two great ones.
You see, in Covert Action, there were two great "games" (same game, but it switched between two styles throughout) packed into one title--which ended up detracting from a coherent focus.
Since then, Sid has advocated making games with a clear focus in concept and presentation...all in the name of FUN. Complexity means little if the game is confusing and/or not fun.
So goes the company motto.

Pretty successful so far...
[This message has been edited by yin26 (edited March 31, 2000).]